Recording API PUT request returns 400 Bad Request when stopping via Laravel

So I’m seeing a very odd bug with the Recording API when trying to programmatically stop a call recording from my Laravel backend.

• I am currently building a feature in our PHP application that allows supervisors to halt recordings of specific interactions directly from the dashboard. The goal is to use the Genesys Cloud REST API to send a command to stop the recording without ending the call itself.
• I have successfully retrieved the active recording ID by polling the active conversations. I filter the response array in PHP to find the recording object where state equals active and the conversationId matches our target session. This part works fine and I get a valid recordingId string.
• The issue arises when I attempt to update the recording status. According to the Genesys Cloud API documentation, I should be able to use a PUT request to update the recording state. I am using Guzzle to send this request with the appropriate headers, including the Bearer token which I know is valid because other calls succeed.
• Here is the specific code block I am using in my Laravel service class:

$response = $client->put("/api/v2/conversations/calls/{$conversationId}/recordingstate", [
'json' => [
'state' => 'stopped',
'reason' => 'supervisor_request'
]
]);

• However, every single time I execute this, I receive a 400 Bad Request error. The response body contains a generic error message saying “Invalid request body” but does not specify which field is causing the issue. I have verified that the JSON payload is correctly encoded and that the recordingId is not null.
• I have tried sending the payload as raw JSON in the body parameter instead of using the json key in Guzzle, but the result is identical. I am wondering if there is a specific format requirement for the state change payload that is not clearly documented, or if I am missing a required field like endTime or duration.
• Has anyone else encountered this issue while trying to stop recordings via the API? I am based in Mexico City and working during standard business hours, so I can test fixes quickly if anyone has a working example of the correct payload structure.

This happens because the payload structure mismatch between your Laravel serializer and the strict schema expected by the Genesys Cloud Recording API. The PUT endpoint for stopping a recording does not accept an empty body or a generic JSON object. It requires a specific RecordingStopRequest object.

Verify your curl command first to isolate the SDK serialization issue:

curl -X PUT "https://api.mypurecloud.com/api/v2/conversations/calls/{conversationId}/recordingstate" \
 -H "Authorization: Bearer {ACCESS_TOKEN}" \
 -H "Content-Type: application/json" \
 -d '{
 "reason": "Supervisor halted recording via dashboard"
 }'

If the curl succeeds but your PHP client fails, your Laravel code is likely sending {} or null. The API rejects empty payloads with a 400 Bad Request. You must include the reason field.

In PHP, ensure your HTTP client constructs the body explicitly:

use GuzzleHttp\Client;

$client = new Client(['base_uri' => 'https://api.mypurecloud.com/']);

$response = $client->put("api/v2/conversations/calls/{$conversationId}/recordingstate", [
 'headers' => [
 'Authorization' => "Bearer {$token}",
 'Content-Type' => 'application/json'
 ],
 'json' => [
 'reason' => 'Supervisor halted recording via dashboard'
 ]
]);

The reason field is mandatory for audit trails. Omitting it triggers validation errors on the provider side. If you are using a wrapper library, check if it strips empty optional fields. This is a common contract violation in consumer-driven testing scenarios where the consumer assumes optional fields can be omitted entirely.

Note: The recording state transition is not instantaneous. Poll the recording metadata until state equals stopped before attempting to download or archive the file.